The relationship of exercise response to personality

1973 ◽  
Vol 3 (3) ◽  
pp. 343-349 ◽  
Author(s):  
R. G. Stanaway ◽  
R. P. Hullin
Keyword(s):  
Blood Glucose ◽  
Blood Lactate ◽  
Pulmonary Ventilation ◽  
Bicycle Ergometer ◽  
Curvilinear Relationship ◽  
Eysenck Personality Inventory ◽  
Exercise Response ◽  
Neuroticism Scale ◽  
Relationship Of ◽  
The Relationship

SYNOPSISIn an experiment to investigate the relationship of exercise response to the personality dimensions of introversion-extraversion and neuroticism, 30 subjects filled in an Eysenck Personality Inventory and were later given a standard amount of exercise on a bicycle ergometer, with blood samples being taken before and afterwards to be analysed for lactate and glucose. A highly significant positive correlation was found between neuroticism and the change in blood glucose and a highly significant curvilinear relationship between neuroticism and the increase in blood lactate, with the largest increases in lactate occurring at the extremes of the neuroticism scale. No significant relationship was found between introversion-extraversion and either of the biochemical variables. Hypotheses are put forward to account for the relationship between neuroticism and the change in blood glucose in terms of the action of adrenaline in releasing glucose from the liver, and to account for the relationship between neuroticism and the increase in blood lactate in terms of differing rates of pulmonary ventilation during and after exercise.

Relationship of Ordinal Position and Sex to Neuroticism in Adults

1977 ◽  
Vol 41 (3) ◽  
pp. 843-846 ◽  
Author(s):  
John M. Sutton ◽  
Walter G. McIntire
Keyword(s):  
Graduate Students ◽  
Birth Order ◽  
Personal Data ◽  
Personality Inventory ◽  
Ordinal Position ◽  
Female Adult ◽  
Eysenck Personality Inventory ◽  
Neuroticism Scale ◽  
Relationship Of ◽  
The Relationship

This study focused on the relationship between birth order, sex, and levels of adjustment of 120 male and 233 female adult college students (primarily graduate students). Subjects were approached in classes and asked to complete the Eysenck Personality Inventory and a personal data questionnaire. They were assigned to one of the three groups on the basis of their scores on the Neuroticism scale of the Eysenck Personality Inventory. A significant relationship between sex and ordinal position was found. Onlyborn males and firstborn females were overrepresented in the high neurotic group. In this same group, firstborn males and middle females were underrepresented. The distribution by sex and ordinal position in the average and low neuroticism groups was not different from chance. The present study supports the concept that there are birth-order differences with respect to sex and neuroticism.

Threshold for muscle lactate accumulation during progressive exercise

1989 ◽  
Vol 66 (6) ◽  
pp. 2710-2716 ◽  
Author(s):  
J. Chwalbinska-Moneta ◽  
R. A. Robergs ◽  
D. L. Costill ◽  
W. J. Fink
Keyword(s):  
Blood Lactate ◽  
Bicycle Ergometer ◽  
Exercise Tests ◽  
Muscle Lactate ◽  
Lactate Accumulation ◽  
Ergometer Exercise ◽  
Progressive Exercise ◽  
Blood Lactate Accumulation ◽  
Highly Correlated ◽  
The Relationship

The purpose of this study was to investigate the relationship between muscle and blood lactate concentrations during progressive exercise. Seven endurance-trained male college students performed three incremental bicycle ergometer exercise tests. The first two tests (tests I and II) were identical and consisted of 3-min stage durations with 2-min rest intervals and increased by 50-W increments until exhaustion. During these tests, blood was sampled from a hyperemized earlobe for lactate and pH measurement (and from an antecubital vein during test I), and the exercise intensities corresponding to the lactate threshold (LT), individual anaerobic threshold (IAT), and onset of blood lactate accumulation (OBLA) were determined. The test III was performed at predetermined work loads (50 W below OBLA, at OBLA, and 50 W above OBLA), with the same stage and rest interval durations of tests I and II. Muscle biopsies for lactate and pH determination were taken at rest and immediately after the completion of the three exercise intensities. Blood samples were drawn simultaneously with each biopsy. Muscle lactate concentrations increased abruptly at exercise intensities greater than the “below-OBLA” stage [50.5% maximal O2 uptake (VO2 max)] and resembled a threshold. An increase in blood lactate and [H+] also occurred at the below-OBLA stage; however, no significant change in muscle [H+] was observed. Muscle lactate concentrations were highly correlated to blood lactate (r = 0.91), and muscle-to-blood lactate ratios at below-OBLA, at-OBLA, and above-OBLA stages were 0.74, 0.63, 0.96, and 0.95, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)

Relationship of potassium ions and blood lactate to ventilation during exercise

2010 ◽  
Vol 35 (5) ◽  
pp. 691-698
Author(s):  
Robert G. McMurray ◽  
Matthew S. Tenan
Keyword(s):  
Blood Lactate ◽  
Exercise Intensity ◽  
Minute Ventilation ◽  
Potassium Ions ◽  
Ventilatory Control ◽  
Volitional Fatigue ◽  
Relationship Of ◽  
Glycogen Stores ◽  
The Relationship ◽  
Recent Attention

Ventilatory control during exercise is a complex network of neural and humoral signals. One humoral input that has received little recent attention in the exercise literature is potassium ions [K+]. The purpose of this study was to examine the relationship between [K+] and ventilation during an incremental cycle test and to determine if the relationship between [K+] and ventilation differs when blood lactate [lac–] is manipulated. Eight experienced triathletes (4 of each sex) completed 2 incremental, progressive (5-min stages) cycle tests to volitional fatigue: 1 with normal glycogen stores and 1 with reduced glycogen. Minute ventilation was measured during the final minute of each stage, and blood [lac–] and [K+] were measured at the end of each exercise stage. Minute ventilation and [K+] increased with exercise intensity and were similar between trials (p > 0.5), despite lower [lac–] during the reduced-glycogen trial. The concordance correlations (Rc) between [lac–] and minute ventilation were stronger for both trials (Rc = ~0.88–0.96), but the slopes of the relationships were different than the relationships between [K+] and minute ventilation (Rc = ~0.76–0.89). The slope of the relationship between [lac–] and minute ventilation was not as steep during the reduced-glycogen trial, compared with the normal trial (p = 0.002). Conversely, the slope of the relationships between [K+] and minute ventilation did not change between trials (p = 0.454). The consistent relationship of minute ventilation and blood [K+] during exercise suggests a role for this ion in the control of ventilation during exercise. Conversely, the inconsistent relationship between blood lactate and ventilation brings into question the importance of the relationship between lactate and ventilation during exercise.

Neuroticism and Sense of Coherence

1996 ◽  
Vol 79 (1) ◽  
pp. 343-349 ◽  
Author(s):  
Linda M. Gibson ◽  
M. J. Cook
Keyword(s):  
Sense Of Coherence ◽  
General Health ◽  
Negative Relationship ◽  
Life Questionnaire ◽  
Personality Variables ◽  
Eysenck Personality Inventory ◽  
Item Orientation ◽  
Relationship Of ◽  
The Relationship ◽  
Health Questionnaires

The relationship of scores on sense of coherence with measures of personality traits was assessed using the 29-item Orientation to Life Questionnaire and the Eysenck Personality Inventory. In one group of 95 mixed-sex students scores on Neuroticism bore a highly negative relationship with scores on sense of coherence. Findings support the current literature that health questionnaires may indirectly measure Neuroticism and that personality variables play an important role in general health.

Elements of Neuroticism in Relation to Headache Symptomatology

1997 ◽  
Vol 80 (1) ◽  
pp. 227-235 ◽  
Author(s):  
Robert L. Kentle
Keyword(s):  
University Students ◽  
Anxiety Scale ◽  
Short Questionnaire ◽  
Neuroticism Scale ◽  
University Undergraduates ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to ascertain which elements within the factor of Neuroticism are related to headache symptomatology. Consequently, scores on individual items of 2 Neuroticism scales were correlated with headache questions. The first was the Neuroticism scale of Eysenck's Improved Short Questionnaire which was given, along with 20 questions about headaches, to 500 university students. The second was the Neurotic Anxiety scale of the Adjective Self-description scales which was administered, along with 7 questions about headaches, to 400 university undergraduates. Both tension and migraine symptomatology were found to be related to the “tension” items of the Neuroticism scales. Migraine was found to be related to cycles of mood. Neither type of headache was found to be especially related to Depression. The relationship of headache symptomatology to Neuroticism appears to be slight but direct.

Urinary 3-methylhistidine and progressive winter undernutrition in white-tailed deer

1998 ◽  
Vol 76 (11) ◽  
pp. 2090-2095 ◽  
Author(s):  
Glenn D DelGiudice ◽  
Ken D Kerr ◽  
L David Mech ◽  
Michael R Riggs ◽  
Ulysses S Seal
Keyword(s):  
Mass Loss ◽  
Muscle Protein ◽  
Curvilinear Relationship ◽  
Base Line ◽  
Physiological Indicators ◽  
Nutritional Restriction ◽  
Muscle Catabolism ◽  
Cumulative Mass ◽  
Relationship Of ◽  
The Relationship

Physiological indicators of muscle catabolism would aid assessment of winter nutritional restriction of ungulates, and urinary 3-methylhistidine has exhibited potential in this regard in several species. We examined the effect of chronic moderate and severe nutritional restriction during winter on urinary 3-methylhistidine:creatinine ratios in seven adult white-tailed deer (Odocoileus virginianus) and the relationship of these ratios to urinary urea nitrogen:creatinine ratios. Mean base line estimates of urinary 3-methylhistidine:creatinine ratio for the control and severely restricted deer (0.043 and 0.086 µmol:mg, respectively) were similar (P = 0.280) and remained unchanged in the control deer throughout the study. In contrast, mean 3-methylhistidine:creatinine ratios increased dramatically as nutritional restriction and cumulative mass loss progressed; the quadratic component of the data for the chronically restricted deer was significant (P < 0.001). Likewise, there was a strong curvilinear relationship (R2 = 0.82) between cumulative mass loss (up to 29%) of the pooled deer and urinary 3-methylhistidine:creatinine ratios. Further, urinary urea nitrogen:creatinine ratios were strongly related to 3-methylhistidine:creatinine ratios (r2 = 0.89). Our study indicates that further investigation of 3-methylhistidine as an indicator of physical condition and muscle protein breakdown is warranted.

Curvilinear relationship of entrepreneurial experience and entrepreneurial self-efficacy: Entrepreneurial passion as a moderator

2021 ◽  
Vol 49 (5) ◽  
pp. 1-15
Author(s):  
Yanbin Liu ◽  
Wei Wang ◽  
Ping Yuan ◽  
Yanpeng Yuan
Keyword(s):  
Self Efficacy ◽  
Future Research ◽  
Curvilinear Relationship ◽  
Research Directions ◽  
Entrepreneurial Experience ◽  
Entrepreneurial Passion ◽  
Upward Slope ◽  
Future Research Directions ◽  
Relationship Of ◽  
The Relationship

We combined experience curve theory and social learning theory and proposed that the relationship between entrepreneurs' prior experience and their entrepreneurial self-efficacy would be curvilinear, with the upward slope of the curve gradually decreasing. Participants were 266 entrepreneurs in Southeast China who completed a survey. Our results show there was a nonlinear relationship between entrepreneurial experience and entrepreneurial self-efficacy, suggesting that as entrepreneurs gained more experience, the rate of entrepreneurial self-efficacy slowed down. Furthermore, we found that entrepreneurial passion moderated this curvilinear relationship, such that when entrepreneurial passion was strong, nascent entrepreneurs with less experience exhibited greater entrepreneurial self-efficacy than did entrepreneurs with more experience. Theoretical contributions and future research directions are discussed.

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